Tuft-cutting mechanism for axminster-carpet and other tuftedfabric looms



C. C. BRINTON TUFT-CUTTING MECHANISM FOR AXMINSTER CARPET AND OTHER TUFTED-FABRIC LOOMS June 20, 1950 5 Sheets-Sheet 1 Filed Oct. 18, 1947 June 20, 1950 c. c. BRINTON 2,512,302

TUFT-CUTTING MECHANISM FOR AXMINSTER CARPET AND OTHER TUFTED-FABRIC LOOMS Filed Oct. 18, 1947 a Sheets-Sheet z I I I I I I I I I l I I I I I I I I I I I I I I l I I I l l I I I I I I I I I I I I I I 90. I 27 g l '2 26 June 20, 1950 c. c. BRINTON 2,512,302

TUFT-CUTTING MECHANISM FOR AXMINSTER CARPET AND OTHER TUFTED-FABRIC LOOMS- Filed 001;. 18, 1947 3 SheetsSheet 5 Ill- 3 i dug/0% Patented June 20, 1950 TUF'I GUHE'IING MECHANISM FOR AXMIN STER-CARBET. .AND OTHER" 'IiUHEED FABRIC vLO OMS Cecil Charles Brinton, Worcester, 'Engiand; --'as-* signer: of Tone-half to Brint'on's' LimiteiLorce's' ter, England 'ApplicationlOctober"18} 19.47,, seriamo. moms -In GreafiBrit a'in October 22,1946

'1 s Glaims. 1

lhe tuft-cutting mechanism embodiedi wn taintypes of looms for weavingtuftedtabries; such as the Brinton Axminsterecarpet ileum, usually involves the use of one or :more longstroke cutting-knives which, during .each .cycle of the operations, are traversed along *the :face of a staionary knife-comb so that each operates to out off a number i of :tufts in succession ifrom the ends of yarns whichsare. resiliently :held, in a yarn carriage and which, previously, ahave been seized and pulled outwardly. away :from i the yarn carriage between the teeth 'of/the-said-knifee comb, by a system-.ofgrippers.

These traversing cutter-blades have, :in some oases -a working stroke as. longas three feet and not only do their. :cutting and return strokes occupy a considerable proportion of eaehcycle ofsoperations and correspondingly slow .downithe theworkingpf the loom, but their actuationainvolves the use of complicatedand bulky mechanism and demands the :expenditure -of considerable power. The long blades are, moreover, subject to heavy wear and. stresses and. the adjustments necessary'for maintaining themineefv fective cutting relationship to the .stationa ry knife-comb are diflicult of performance.

Wi-th the: object of .obviatingithe disadvantages attending the use of long-stroke ,cutters and of speeding up .the "working .of .the .loom, it has already been proposed .in the specification of my United States Patent No. $828,921, .to=-,em-,

.in a :Brinton-type ..or. similar loom, aftuftcutting .mechanism.that comprises, in (3011151118,?- tion with acne-piece stationary knife-conibextending vacross the width of the .loom, .a moving cutter -comb'm adeup of a=series or gangsof separate :iand independently adjustable toothed platesassembledrto move as aunitthe arrangementand operation of the mechanism beingsuch that, when the moving unit at. rest, itsteeth register-with theiteeth ori certainof the teeth, (if the stationary comb whereas the lateral dis-q placement .of .the.:m0ving cutter comb through only a, short distance, ,such 1 as .the 1 distance 'lbiit slightly exceeding the pitch, of'lits lteeth, Simultaneously seversor cutsofl a. row of tufts-from the ends of ,yarns extending between adjacent teeth rand heldby the. gripper system. In this priorproposal, each .plate of the movin cutt combiassembly .is urged ltowards and isxo'arried by the vstationaryknife comb,'by means of a'c or responding keeperplate which, at .its upper edge; abuts the knife comb and, at ,itslowered'ga'abuts the cutter comb" plate to press "both *the upper and flower portions :of the latter into facje toface contact with the 'kniiecomb; -The leeper plate is carried" by two boltsprojecting *fromt'he knife comb above "the cutter comb plate and nuts, screwed 'on to the said bolts, compress spring, washers between themselvesand; the keeper ,plate It was found; in "practice, that tuft-cutting. imeohanisms constructed "in accord a nce with "the above earlier proposals, cannot be made to "function efiiciently and the pnmmai object -of the present invention to provide an improved short-stroke tuft cutting mechanism which will operate-"rapidly and efficiently.

'Another'obj ect -01 the "invention is tit-minimise the frictional forces-created-between themoving cutter comb andstationary knifecombdurir'i'g each "tuft cutting-'operation -of the mechanism; A furtherobject (if-the invention is to facili' ta'te "the'initial'setting of the-=mechein-isi'n and any subsequent adl' Stments' 'thert'may Benecessary asa consequenee of wear between relatively movable parts,

still another object of" the-*inventionis to -en sure that each yarnend is-severed cleanly-and quickly during each cycle of operations- 170 produce row of tufts held within the gripper sys temready" for transfer to the appropriate part o'f the loom prepa-ratory to embodiment ina carpet or othertufted fabric.

Yet -=another object of .the invention is wto loc'al ise' the pressure "between the movin cutter comb and stationary knife comb in the region of the; yarn-"cutting-tee'thof the said combsr Yet -an'othe'r object of -the invent-ion is I to :eir.--

able the tuft cutting me ehamsm-tobe removed temporarily from theyiiiii'ty of the yarn'zends Whi'fS 't the latter a-re 'being seized and -pulled from the yarn carriage by the-gripper system and to enable each yarn i to ib'e received 'between tuft cutting teeth "when th'e'said mechanism is returnedi to its operative oS-ition.

"'Pheseand other objects and advantagessofgthe invention will become apparent upon": considenae tion of the 'followii-ig. detailed-specification {and the accompanying drawings wherein there-its specifically disclosed a preferred: embodiment .of

r the invention.

Figure 3 is afront'elevatiorr o'fthe Figure 4 is a front elevation of the mechanism end shown in Figure 2.

Figure 5 is an end elevation of Figure 1.

Figure 6 is a section along the line M, Figure 4. I

Figure '7 is a section along the line bb, Figure 4.

Figure 8 is a section along the line -0, Figure 4.

Figure 9 is a section along the line dd, Figure 4.

The cutting mechanism shown in the said drawings, comprises a support l which is fixed, along one side thereof, to a shaft 2 rotatably mounted in bearings in the loom frame 3.

The other or forward side of the support I is formed with a platform 4 which is located above a carriage (see Figure 6). The free ends of yams I are retained within compartments 8 in the said carriage, by springs 9, the yarns being spaced at the same pitch as the tufts in the finished carpet or other fabric to be produced, and their ends being arranged to protrude forwardly of the carriage compartments to enable them to be seized between the jaws of a gripper system I0 and withdrawn from the carriage through a distance equal to the desired length of the tufts (see Figure 5) preparatory to cutting a row of tufts from the yarns. Any suitable form of gripper system may be assembled in the loom for seizing and withdrawing the yarn ends and for conveying successive rows of tufts into position ready for embodiment into the carpet or fabric; preferably however, the gripper system is constructed, assembled and operated as described and claimed in the specification of my co-pending application for Letters Patent of the United States Serial No. 780,616, of even date herewith.

The platform 4 is formed along the length of its face, with a channel or groove II in which a cutter actuating bar |2 is slidably accommodated. This bar projects laterally of the support and is formed on its outer end with a head I3 which is adapted to fit within a jaw l4 extending from top to bottom of the adjacent end of a rod I5; the said rod is itself adapted to be longitudinally reciprocated in the loom frame 3 by a cam or equivalent expedient (not shown) for imparting reciprocal movement to the actuating bar The face of the platform 4" is recessed at l6 along its length and a hard metal plate I1 is secured within the said recess by screws Ho. The outer face of the plate I! is located flush with the platform face and is formed with a longitudinal depression IS, the face portion below the said depression being lapped or otherwise treated to provide a smooth bearing surface for plates L) which are assembled in edge to edge contact lengthwise of the platform to provide the movable cutter comb. The upper edge of the depression I8 is level with or slightly above the upper edges of the plates l9 sothat the latter, at the said upper edges, do not bear upon the facing plate H.

The front face of each plate I9 is also formed with a longitudinal depression 20 to provide bearing surfaces |9a, |9b, above and below the said plate depression, for plates 2| which, likewise, are

pression 22 which registers with the depression 20 in the cutter comb plates l9, to form top and 4 bottom bearing surfaces which seat respectively upon the top and bottom bearing surfaces of the said cutter comb plates. The said bearing surfaces of the plates l9 and 2|,are also lapped or otherwise-made as smooth and flat as possible.

The plates l9 and 2| are toothed or serrated along their lower edges, the teeth being arranged at the same pitch as the yarns in the carriage 5. The plates 2| are deeper than the plates |9 (see Figure 6), and their upper portions extend above the plates I9 where they bear upon domed studs 23 on the facing plate H. A single stud 23 is provided for each knife comb plate and the former is so disposed upon the facing plate that it is located mid-way between the two ends of the complementary knife comb plate.

Thus, the plates I9 from which the cutter comb is built, are sandwiched between the facing plate ll and the plates 2| of the knife comb and the upper portions are prevented, by the studs 23, from being gripped tightly between the said plate I! and the said plates 2|; also, the plates 2| are adapted to rock upon the said studs.

The facing plate is formed with elongated apertures 24 through each of which a complementary lug 25 on the cutter actuating bar l2, extends into engagement with a hole 26 in, and mid-way between the ends of, the complementary cutter comb plate l9. Consequently, reciprocal cutting movements can be imparted to the sandwiched plates of the cutter comb by the bar l2 through the lugs 25. Since the bearing surfaces between the-plates l1, l9 and 2| are small compared with the areas of the said plates, due to the formation of the depressions I8, 20 and 22, the eifort required to impart cutting strokes to the cutter comb is substantially reduced. This effort is still further reduced by making the depression 2|) of such a height that no rubbing contact is made by the upper portions of the cutter comb plates with the facing plate.

' The cutter comb plates are restricted against inadvertent up and down movement between the knife comb plates and the facing plate, by pegs 2| projecting from the latter plate into complementary elongated or slot-like apertures 28 in the said comb plates, one such aperture being formed adjacent each of the two opposite ends of each comb plate'to eliminate any possibility of rocking movement taking place.

' Each knife comb plate 2| is carried by a pair of pins 35 on the facing plate, which pins fit'into holes 31 in the said comb plate 2|, and the latter is clamped in position relatively to the sup port by a pair of bolts 29 which extend through holes in the lower part, and adjacent the two opposite ends, of the said plate, elongated slotlike apertures 30 in the lower part of the complementary cutter comb plate |9,'holes 3| in the facing plate l1, and further holes or apertures 32 in an anchor plate or lip 33 secured to the back of the platform 4. A spring 34, carried by each bolt on the side of the anchor plate remote from the platform, is compressed between the said plate and a milled nut 35 screwed upon the bolt. Thus the lower toothedportion of the knife comb plates 2| are pulled towards the facing plate thereby ensuring that the teeth on the individual plates 2| are held in face to face contactwith the teeth on the cutter comb plates |9; the provision of two spring loaded bolts for each plate 2| and the complementary plate It, permits even and uniform pressure to be exerted by the toothed edges of the plates 2| on the jziiothd edges of the plates it along the entire length of the tuft cutting mechanism. I

The application of the said spring initiated force to the lower portions of the toothed plates and the abutment of the upper portions of the ,plates 2| against the domed studs 23, also perfn'iits the majority of the said force to be localised fat the toothed edges of the sandwiched plates [9, particularly as the upper portionsof the latremake no actual contact with the facing plate. 'Af'further advantage of the localisation of the s ring initiated force is that the friction between the plates l1, l9 and 2| is still further i'bduced. A laterally extending arm or lever 3 8 is fixed one end of the shaft, thebu-ter or rreeena-br the said arm being arranged to seat upon the crown 'of a cam-operated push rod '39 which is adaptedto raise the arm in the direction of the arrow (Figure 5) to rotate the shaft througha ffraction of a revolution so that an upwards angular movement may be imparted to the support '1 "to raise the platform supported cutting mechaiiisin 'clear of the yarn ends I (see Figure 6). This upwards movement of the cutting mechaenables the grippers in to have unobstructed access to the said yarn ends. After the yarns have been withdrawn from the carriage to the desired distance by the grippers (see Figure 5), 'thepush rod is lowered with the consequence that the cutting mechanism is also lowered.

Since the yarns and the teeth are pitched 'apartby the same distance and since, after each "cutting stroke, each tooth of the cutter comb fregis'ters with a tooth of the knife comb, the "lowering of the cutting mechanism results in each yarn being located between two adjacent pairs of overlapping teeth. Consequently, by fdi'splacing the bar I2 lengthwise within the plat- ;form groove I'I, an equal movement is imparted 40 "to'th'e cutter comb causing the teeth of the latten to slide over the teeth of the knife comb and "to" cut off the withdrawn yarn ends in the form of a row of tufts; these tufts remain gripped Within thejaws l and can therefore be carried f'by"the"latter into the necessary position to en- "a'ble them to be embodied in a carpet or fabric.

'The stroke of the bar 12 and of the cutter comb may be equal to the pitch of theteeth; jpreferably however it is equal to a multiple of ithejsaid pitch to ensure that the tufts are com- ,Iplet'ely" severed from the yarns. It'is found, in "practice, that a stroke equal'to double the pitch lefthe'teeth is fully effective for severing a row ofitufts by a single longitudinal movement of the- Lbarand cutter comb, a second row of tufts belin'g severed by the return movementof the said "barand'comb.

, To prevent the cutter comb ends projecting beyond the complementary ends of the knife comb the cutter comb has completed atuft-cutt'l'r'fg stroke, the end plates 2| of the said knife 'comb are preferably somewhat longer than the intermediate plates (see Figure" 3).

The above-described construction and operatio'n permits of successive rows of [tufts being Isevered quickly and cleanly from the yarns with a minimum of effort, in a simple and efficient manner and with a minimum of wear upon each cutting edge. The provision of a .multiplicity pf plates in each of the cutter and knife combs and jthe ability to adjust the pressure exerted'by' each dividual knife comb plateon the complemenary :cutter; comb plate enables the-mechanism 1' inv'ention.

any wear that rfay "take place, to be taken without difllclllty. I p

'The above specifically described fembddiiiiiit "of the invention should be considered as illustrative only as, "obviously, many 'chan'g'es-"may be made in the mechanism described without de3- parting from the spirit or scope of the invent- 'tion; for example, the anchor plate or lip '33 may be an integral part of theplatform 4 and alt'er'n' a "tive'means maybe provided for raising the support l or for p'ermitti-ng of the automatic make and-break connectionof the bar l2 with'the-"ro'd l5. Reference should therefore be had to "appended claims in determining the scope orth'e Having described my invention what I an 'and'desire to secure by Letters Patent "l. Tuft cutti'ngme'chanism for 'Axinin'ster carpet 'arid dther 'tu'ftd fabric looms, comprising'a support, a-knife coinb mounted on a face {of the said support, a movable cutter comb -"'sandwiched between f-the "said support and the said knife comb, the-cutter comb and knife Qdmib sedate-- ing built iip 'from a gang of plates "arranged in endf-to-end contact, each plate being formed ffalong'one edge with 'as'eries of teeth, the toothed edge of eachfknife comb-plate registering with.

injtlie direction' of the support, thefsaidj b: fsu'pportin'g face-and the adjacent faces;' of two'comb assembliesbeing formed with id "jsin's 'along'the length thereof for minimising: IIIlCtiQn "between the movable cutter" coin-bp' t'hez islaidface .andtheknifecomb, and means for'refciiprocating the cutter comb "assembly length- ;wi'sfe of the support for effecting its tuft cutting gt w ::n,1f.v cuttin mechanism--ror-ilxmiaster eai-- ,ptand'othertufted fabric looms, according to .claim '1, wherein the depression in theconibsu'p Ypmtihg'face of the support is of such dimensions jithat the cutter comb j'assembly contacts the said face only in the locality of thetoothededge ldf the. saldassembly. v 3

13. "fIuft cutting 'mechanismfor 'Axminstr carpet and other itufted fabric looms, 'comprisi'rigfa support having a longitudinal depression in one l facelthereof, .and a longitudinal channel in the "base of the said depression, a reciprocable 1 bar jslidaibly accommodated in the said' chan nel and ."proje ctin'g v beyond at least one end thereof, a plurality of equally spaced studs projecting from the said face above said [channel and-an equal number of "similarly Spaced lugsrojecting from said bar, a gang of identical plates each; having .a series of teeth formed.alongone'edge-thereof, arrangeai end-toend contactto*fo'rm arontinuousmovable cutter comb, eachplate being carried by a complem n ryl fi tintol Ippeni g thereon mid-way between its ends and by ajpair of pegs projecting from the base of ft-lie Ijsaid depression and'engaging sparateelorig'ated l ap'ertures in the plate'on either side of the said stud-receiving opening, the plates being or such 'fdimensioris that their edges'opposite to'thesaid toothed edgesdo' not project-beyond the said -depress'ion, "and" a second gang of plateseach hav- {ing fa-fse'riesbf teeth'along one edge which are -at tlfe same pitch'as, -and register with, the cuttel comb teeth, 1 arranged in end to-l-errd contact *to'for'ina stationary knife: comb, the said knife con-rib plat'es, with {the exception' of the two end to be set quickly and; accurately andalsoenabl'es fl aiid lbiigerplates, lceinguof 1 identical? dimensions ;ject beyond the cutter v combplates and! each seats, mid-way between its ends, upon a corn- .plementai'y stud on the support, each knife comb plate being assembled to the support on the side of the cutter comb plates remote fromlthe said support, by a pair of bolts anchored thereto, in the locality of its toothed edge and on eitherlside 10f .thesaid complementary stud, each ofvthe-said bolts extending through an additional elongated aperture in a cutter cornbplate, a hole in the said support and an aperture in an abutment;.;fi ed to the said support on the side of the cutter comb assembly remote from the knife comb assembly, a coil spring carried on the bolt portion extending beyond said fixed abutment being compressed between the latter and an abutment ad- Justable axially of the bolt, the adjacent faces of the cutter and knife comb assemblies having registering longitudinal depressions therein.-

4. An Axminster carpet or other tufted fabric loom comprising a shaft journalled in the loom frame, a support fixed along one edge upon the said shaft and having a platform formed along its opposite edge, the stationary knife comb of a tuft cutting mechanism being assembled to the said platform, and a movable cutter combbeing sandwiched between the platform and the said knife comb, each of the said combs bein built up from a gang of plates arranged in end-to-end contact, and having a series of yarn cutting teeth of the same pitch along registering edges thereof, a yarn carriage fixed within the loom frame and having an aligned series of compartments at the same pitch as the said yarn cutting teeth and a length of yarn being resiliently retained by its end in each carriage compartment, a gripper system for seizing and withdrawing the said yarn ends from the carriage, between the teeth of the cutter and knife combs and means for displacing the cutter comb assembly endwise of the platform for severing the said withdrawn yarn ends. I T Q a.

5. An Axminster carpet or other tufted fabric loom comprising a shaft journalled in the loom frame, a support fixed along one edge to the said shaft and having a platform formed along its opposite edge, the stationary knife comb of a :tuft cutting mechanism being assembled to the ,said platform and a movable cutter comb being ,sandwiched between the platform and the said knife comb, each of the said combs being built np from a gang of plates arranged in end-to-end contact and having a series of yarn cutting teeth formed along registering edges thereof, and each v of the knife comb plates being spring urged, in

the locality of the toothed edge of the knife plate assembly, towards the said support, a yarn carriage fixed. within the loom frame and having therein a series of compartments, in each of which the end of a yarn is resiliently retained, arranged at the same pitch as the said teeth, a.-

. gripper system for seizing and withdrawin said yarn ends from the said compartments between the teeth of the cutter and knife combs, ,means for raising and lowering the platform relatively -to the yarn carriage and means for displacing the cutter comb assembly endwise of the platform for severing the withdrawn yarn ends.

- the loom frame, a support fixed alongone edge Jagraise and lower the platform, tuft-cutt ng mechanism mounted upon the said platform and comprising-a stationary knife comb clamped to 8 to the said shaft and having a platform along its other edge,- an arm secured to said shaftendwise of the said support and seating upon a recipro- ,cable lqd dictated in the loom frame for'impartr ing reciprocable rotational movement to the s aft and spring urged towards the said platform: and a movable cutter comb sandwiched between the platform and-the said knife comb, each of the said combs beingbuilt up from a gang of plates arranged in end-to end contact and depending be} low the platform, their depending edges register"- ing with one another and being formed" with yarn-cutting teeth of thesame pitch, a yarn car riage disposed below the support and on the side of the platform adjacent the'shaft, the said car- .riage havinga system of compartments, in each of which a yarn end is resiliently retained, spaced at the same pitch as the said teeth,a gripper system for seizing and withdrawing the yarn ends from the carriage, the teeth of the cutting mechanism beinglocated clear of the yarn ends when .the platforjm is raised and bridging each with- ;drawn yarn end when the platform is lowered, and means for displacing the cutter combjendwiseof the platform, through a distance not less than the pitch of the tufts, when the latter is lowered, forsevering the withdrawn yarn ends. 7. An Amninster carpet or other tufted fabric .loom,.;according to claim 6, wherein the means forimparting endwisemovement to the movable thesaid cutter comb, the said bar extending becuttercomb comprisesa bar reciprocally mounted in the platform of the support, and having a ura i u se c which e a are H of the said cutter comb. p p 1 8. An A (minster carpet or other tufted fabric loom, accordingto claim 6, wherein the means for imparting endwise movement to the, movable cutter comb comprises a bar reciprocally mounted inthe platformofthe support, and having a plurality of lugs/each of which engages a plate of the said cutter comb,; the said bar extending beyond ,atleast one end of the platform, each projecting end b'e ing brought into automatically detachable engagement with a second reciprocable rod 1 mounted in the loom frame as the platform is lowered.

9. ,An Axminster carpet or other tufted fabric lodniQaccording to claim 6, wherein the means forimparting endwise movement to the movable cutter comb comprises a bar reciprocally mounted in, the platform of the support, and having a plurality of lugs each of which engages a, platejof ended slot formed in the adjacent end ofa second reciprocable rod mounted in the loom frame,

I and"which, as the platform is raised, automatically, passes'out 0f the said slot to sever driving connection between the said rod and thesaid ban, v

i i o. ,fI' -uft cutting mechanism for Axminster 'carpet" and other tufted fabric looms comprisinga l'support having a depression formed in and "lengthwise of one face thereof, domed studs on side and lengthwise of the said depression, a stath e said-support arranged in alignment to one tionaryfknife comb mounted on said support in uspacedirelationshipl to the said facefthe said comb seatingadjacent one edge upon the said an, r d eins arme ,Withieih was s?- posite edge, a movable cutter comb consisting of a gang of plates arranged in end to end contact, sandwiched in the space between the support and the knife comb, one edge of the said cutter comb which registers with the toothed edge of the knife comb, being also formed with teeth and its opposite edge being located between the edges of the said depression, adjustable resilient means for pressing together the toothed edges of the knife and cutter combs, and means for reciprocating the cutter comb to displace its toothed edge lengthwise of the toothed edge of the knife comb.

11. Tuft cutting mechanism for Axminster carpet and other tufted fabric looms comprising a support having a depression formed in and lengthwise of one face thereof, domed studs on the said support arranged in alignment to one side and lengthwise of the said depression, a stationary knife comb mounted on said support in spaced relationship to the said face the said comb consisting of a gang of plates each seating adjacent one edge upon a complementary domed stud and being formed with teeth along its opposite edge a movable cutter comb, also consisting of a similar but shallower gang of plates arranged in end-to-end contact, sandwiched between the said support and knife comb, the toothed edge of each cutter comb plate registering with the toothed edge of a complementary knife comb plate and the opposite edge of each of the said cutter comb plates being located between the edges of the said depression, adjustable resilient means for pressing together the toothed edges of the knife and cutter combs, and means for re-v ciprocating the cutter comb to displace its toothed edge lengthwise f the toothed edge of the knife comb.

12. Tuft cutting mechanism for Axminster carpet and other tufted fabric looms comprising a support having a depression formed in and lengthwise of one face thereof, domed stud on the said support arranged in alignment to one side and lengthwise of the said depression, a stationary knife comb mounted on said support in spaced relationship to the said face, the said comb seating adjacent one edge upon the said studs and being formed with teeth along its opposite edge, a movable cutter comb consisting of a gang of plates arranged in end to end contact, sandwiched in the space between the support and the knife comb, one edge of the said cutter comb which registers with the toothed edge of the knife 10 comb, being also formed with teeth and its upposite edge being located between the edges of the said depression, spring loaded bolts carried by the said knife comb adjacent its toothed edge and extending through elongated apertures in the said movable cutter comb so that the toothed edge of the knife comb is pressed resiliently against the toothed edge of the cutter comb, and means fOr reciprocating the cutter comb to displace its toothed edge lengthwise of the toothed edge of the knife comb.

13. Tuft cutting mechanism for Axminster carpet and other tufted fabric looms comprising a support having a depression formed in and lengthwise of one face thereof, domed studs on the said support arranged in alignment to one side and lengthwise of the said depression, a stationary knife comb mounted on said support in spaced relationship to the said face the said comb consisting of a gang of plates each seating adjacent one edge upon a complementary domed stud and being formed with teeth along its opposite edge a movable cutter comb, also consisting of a similar but shallower gang of plates arranged in end-to-end contact, sandwiched between the said support and knife comb, the toothed edge of each cutter comb plate registering with the toothed edge of a complementary knife comb plate and the opposite edge of each of the said cutter comb plates being located between the edges of the said depression, two spring loaded bolts carried by each plate of the knife comb adjacent its toothed edge and extending through elongated apertures in the complementary plate of the movable cutter comb so that the toothed edges of the said complementary plates are pressed resiliently together, and means for reciprocating the cutter comb to displace its toothed edge lengthwise of the toothed edge of the knife comb.

CECIL CHARLES BRINTON.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Gr a r t in a". 1 

